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2 Sheets-Sheet 1 (No Model.)

A. R. ANTHONY.

SEPARATOR.

No. 556,078 Patented Mar. 10, 1896.-

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I R. ANTHONY. a

SBPARATOR.

Patented MarflOg1896.

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ANDREW B.GRAHAMTHUTOUWEWASWNQTDN.DC,

UNITED STATES PATENT OFFICE.

ALFRED ROWAN ANTHONY, oF NEW YORK, N. Y.

SEPARATO R.

SPECIFICATION formingpart of Letters Patent No. 556,078, dated March 10,1896.

' Application filed January 24,1895. sens No. 536,158. (NomodeL) To allwhom it may concern:

Be it known that I, ALFRED ROWAN AN- THONY, a citizen of the UnitedStates, residing at New York, in the county of New York and State of NewYork, have invented certain new and useful Improvements in Separators,of which the following is a specification.

My invention relates to an improvement in separators principally usedfor coal and ore, but applicable to other materials.

The object of the invention is to construct a separator in which thescreens may be reciprocated or vibrated without shaking or injuring thestructure or building in which the apparatus is located to an injuriousextent and to accomplish the screening and separation of the materialwith a small expenditure of power.

To these ends the invention consists in an improved structure, thedetails of which I will now proceed to describe, reference being had tothe accompanying drawings,in which Figure 1 is a longitudinal centralsection on the line a a of Fig. 2. Fig. 2 is a section-on the line b bof Fig. l, and Fig. 3 is a partial plan view showing the connectionsfrom the power-shaft to the screens.

The drawings show a form of my invention which I have constructed andtested with very satisfactory results. A plurality of screens 1 2 3 arelocated one above the other, the upper screen having the largest mesh,the next screen being finer, and so on to the bottom one,which is thefinest. The screens are attached to a suitable framework, consisting ofcross-bars at and longitudinal side bars 5. The screens are suspendedfrom a suitable rigid framework A by spring-supports 6, con sisting ofrods of wood or metal of suitable cross-section. In practice I havefound that oak or other hard-wood planks are very economical andeffective supports for the screens. As shown, these supports 6 arebolted at their upper ends to heavy cross-timbers 7, and at their lowerends they are connected with extensions of cross-bars 4 of the screens.The planks or spring-supports 6 serve to cushion the screens at the endof each stroke or vibration and aid in reversing their motion, thuseconomizing power and minimizing all objectionable jar. By connectingthe corresponding spring-supports for the entire series of screens tothe same beams or parts of the frame and operating the screensalternately the strains that would naturally be transmitted to thetimbers of the frame by any one of the screens are neutralized by theopposing strains transmitted from the other screens of the series. bythe screens are very much modified by the elasticity of thespring-supports.

I attach the spring-supports to the frame so that in their normalposition, when not under tension, they will lie in vertical planes whichare at right angles to the direction of movement. of the lower ends ofthe springs.

The screens are vibrated by connections with a common drive-shaft 8, towhich power is communicated by means of a pulley 9 or in any .othersuitable manner. As shown, each of the screens is connected to a pair ofeccentrics, the eccentrics 1O driving the upper screen and the,eccentrics 11 and 12 driving the middle and lower screens. Theeccentrics are spaced around the shaft so that they operate insuccession, the illustration showing three eccentrics in a group, spacedone hundred and twenty degrees apart. The eccentrics are connected withthe screens by eccentric straps and rods 13, the inner ends of thelatter being pivoted to the frames of the screens.

The screens are inclined, and the coal or other material is delivered atthe upper end of the upper screen in any suitable manner, as by thechute 14. The separated materials may be delivered by the screens intoseparate chutes 15. I have found the separators constructed accordingvto my invention to work with a minimum of power and to impart noinjurious vibrations to the breaker or other structure in which theapparatus is located.

It will be evident that minor changes in the design and construction ofan embodiment of the inventionmay be made without departing from thespirit thereof, and hence I do not wish to be limited to the preciseconstruction and arrangement shown and described.

\Vhat I claim is- In a separator, the combination of a plurality ofscreens arranged one above the other in a vertical series, the frame inwhich said screens are suspended, and the spring-rods for supportingsaid screens, each screen be- Further, the strains transmitted ingsupported in said frame by independent rods the lower ends of which areconnected with the screen and the upper ends rigidly fastened tosuitable parts of the frame, the 5 corresponding supportingrods of theseveral screens being rigidly connected to the same part of the frame,and said rods being normally in Vertical planes transverse to thedirection of their movement; and means for re- 1o eiproeating thescreens in opposing directions,Whereby the strains transmitted throughthe springsupports are neutralized at their point of attachment to theframe, substantially as described.

In testimony whereof I affix my signature I 5 in presence of twoWitnesses.

ALFRED RO\VAN ANTHONY. Vitnesses LEO SCHVVAB, A. W. BLAKE.

